<p>The Tandem Pro 2 unit is designed to work for student/instructor race car training applications. The unit works as a full duplex intercom, which allows a race car instructor to guide a student while in the same car. The student headset is designed to easily slide in/out of one students helmet to another and the instructor headset is self installed for a more permanent installation. The Lithium Ion rechargeable battery life is rated at 8 to 10 hours of talk time and 20 hours of standby.</p><p>&#160;</p><ul><li>Water resistant casing</li><li>Rechargeable Lithium Ion battery</li><li>Intended for race car training instructor users</li><li>Wired communication unit</li><li>Product includes a universal headset kit, charger, battery, mounting bracket and manual (headsets are sold separately)</li></ul>